Family background and childhood in Germany, 1919-1934; emigration to U.S. and undergraduate study and life at Princeton University, 1934-1938. Graduate work at California Institute of Technology, 1938-1942; work with Jesse W. M. DuMond, course load, and importance of his thesis. War work at California Institute of Technology; problems because of enemy alien status; work on firing error indicators. War work at Los Alamos Scientific Laboratory: atomic bomb explosion, feelings concerning implications.

Family background and childhood in Germany, 1919-1934; emigration to U.S. and undergraduate study and life at Princeton University, 1934-1938. Graduate work at California Institute of Technology, 1938-1942; work with Jesse W. M. DuMond, course load, and importance of his thesis. War work at California Institute of Technology; problems because of enemy alien status; work on firing error indicators. War work at Los Alamos Scientific Laboratory: atomic bomb explosion, feelings concerning implications.

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